DFS-R File Type Exculsions

Hey all, is there any way to change the default file type exclusions for ALL replication groups in DFS-R (running 2008)?

I know it already excludes .tmp and .bak by default but I didn't see a way to change those defaults. I'm setting up about 30-40 branch offices to replicate some financials to HQ and I hoped to avoid manually updating each replication group one-by-one.